Could I be having an early miscarriage?

Been ttc 5 months. I’m 8 days late today, I’ve been getting negative tests every day up until yesterday. Today I noticed a little bit of pink when I wipedand I have period pain so I’ve had to take pain killers. I never get pain when I’m coming on, I just get the period “feeling”. It’s not until I actually start bleeding red that I feel a little bit of pain. Around the time my actual period was due I had my usual period “feeling” but it just never came. Ive never ever been late before so I’m dying for answers. This feels different to when I’m usually starting my period. Could this be an early miscarriage or just a late period seeing as all the tests were negative? Maybe the tests were negative because the hcg levels were too low? 🤷🏽‍♀️🤷🏽‍♀️